SfM-MVS BASESD 3D-SPATIAL MODELING USING TRAIN FORWARD VIEW IMAGE CAPTURED BY A SMARTPHONE

Abstract

 In a society with a declining working-age population and an aging workforce, there is a need for research and development of labor-saving measures for railway track maintenance work using digital tools. Against these circumstances, we proposed a smartphone application software that supports track conditions inspection during train patrols and its application to a low-cost track condition management. In this study, we applied SfM-MVS technology to train forward view images captured by a smartphone application software, and reconstruct the 3D-spatial model around the railway tracks. As a result, we found that the 3D-spatial models reconstructed from train forward view images captured by a smartphone has the potential to be used to an alternative or complementary means for labor-intensive work, such as maintenance of railway track alignment, construction surveying of railway facilities around the tracks.